EP2072140B1 - Déchiqueteuse de végétaux - Google Patents

Déchiqueteuse de végétaux Download PDF

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Publication number
EP2072140B1
EP2072140B1 EP20070123893 EP07123893A EP2072140B1 EP 2072140 B1 EP2072140 B1 EP 2072140B1 EP 20070123893 EP20070123893 EP 20070123893 EP 07123893 A EP07123893 A EP 07123893A EP 2072140 B1 EP2072140 B1 EP 2072140B1
Authority
EP
European Patent Office
Prior art keywords
shredder
vegetation
cutter housing
cutter
inlet assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20070123893
Other languages
German (de)
English (en)
Other versions
EP2072140A1 (fr
Inventor
Daniel Dockner
Robert Beadman
Peter Simpson
Graham Paine
Hans-Peter Aglassinger
Andrew Fowles
Peter Heywood
Lennard Kressin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP20070123893 priority Critical patent/EP2072140B1/fr
Priority to CN2008101859958A priority patent/CN101462088B/zh
Publication of EP2072140A1 publication Critical patent/EP2072140A1/fr
Application granted granted Critical
Publication of EP2072140B1 publication Critical patent/EP2072140B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B02C18/2291—Feed chute arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container

Definitions

  • the present invention relates to shredders of the type used for shredding branches and other vegetation, typically garden waste.
  • Garden shredders are typically bulky devices. Their overall height is determined by the space required underneath the application for collection of the shredded material; the dimensions and location of the outlet chute; the volume of the cutter and the cutting cavity; and the length of the inlet chute and hopper, which must be of a length sufficient to prevent contact between a user and the cutter. Most shredders occupy the same three-dimensional space when being stored as they do in use. This means that providing adequate storage can be difficult and this detracts from their overall utility from the viewpoint of the end user.
  • Ilusqvarna manufactures a shredder under the trade mark Flymo Pac-a-Shred This consists of a shredder apparatus supported above the ground upon a frame.
  • the shredder is pivotally mounted on the frame such that it can be pivoted into the space occupied by the frame, in the same manner as an old-fashioned sewing machine mounted in a sewing table would have been.
  • the shredder also includes a demountable collection box which runs under the frame like a drawer.
  • the shredder apparatus can pivot into the collection box for storage. This device suffers from the disadvantage that pivoting of the heavy apparatus requires considerable effort, although gas struts are provided to case the movement.
  • AU-B-83104/82 describes a vegetation shredder in accordance with the preamble of claim 1.
  • a vegetation shredder comprises a shredder cutter unit: a cutter housing for said shredder cutter unit; the cutter housing having an inlet and an outlet; a shredder inlet assembly and a frame supporting the cutter housing in an elevated configuration and defining a space thereunder.
  • the vegetation shredder further comprises a election bin mountable in a space under the cutter housing; and the shredder inlet assembly is locatable for storage in the collection bin.
  • the shredder inlet assembly is locatable into the collection bin in the space below the cutter housing and is wholly enclosed thereby, when the shredder is not in use.
  • the vegetation shredder further comprises a movable safety flap adapted to prevent inadvertent access to exposed cutters whcn the shredder inlet assembly is detached from the cutter housing. More preferably, the flap is biased into a closed position, suitably by means of a spring bias.
  • the vegetation shredder further comprises an electrical interlock to prevent operation when the shredder inlet assembly is detached from the cutter housing.
  • the interlock comprises an engagement element on the shredder inlet assembly wherein the engagement element is adapted to be engagable by a movable locking plate provided on the cutter housing; wherein the locking plate includes a locking plate body adapted to engage an actuation member of an electrical rocker switch. More preferably, the locking plate is moveable between a non-locking position and a locking position, by means of being mounted on a threaded rod rotatable by means of an operator control, enabling electrical operation of the device when in the locking position.
  • the interlock comprises or further comprises a magnetic interlock arrangement comprising at least one magnet provided in or on shredder inlet assembly and a correspondingly located magnetic sensor, preferably a reed switch, mounted within the cutter housing.
  • a magnetic interlock arrangement comprising at least one magnet provided in or on shredder inlet assembly and a correspondingly located magnetic sensor, preferably a reed switch, mounted within the cutter housing.
  • the shredder inlet assembly comprises an elongate shredder inlet chute and a shredder inlet hopper.
  • the frame includes runners upon which the collection bin is adapted, in use, to sit and to be supported thereby.
  • the collection bin has a lower edge and sides formed with recessed portions adapted to engage, in use, the runners.
  • the collection bin is adapted to be invertable over the cutter housing to provide a cover thereto when the vegetation cutter is not in use.
  • the figures show an embodiment of a shredder in accordance with the present invention.
  • the shredder includes a shredder cutter housing 10 having a cutter assembly including a cutter element (obscured), suitably of conventional construction.
  • the cutter housing 10 is supported by legs 11 which, together with horizontal frame elements 12, form a frame upon which a pair of wheels 13 are also carried for ease of manoeuvrability.
  • Cutter housing 10 includes an inlet 14 ( Figures 2 and 3 ) and an outlet 15.
  • the shredder further includes a collection box or bin 16 for receipt, in use, of shredded vegetation.
  • the shredder further includes a shredder inlet assembly 20 detachably mounted upon cutter housing 10 by means of engagement lugs 21 and secured in place against the cutter housing by a catch 22, preferably including an interlock assembly.
  • Shredder inlet assembly 20 comprises an elongate inlet chute 23 and an inlet hopper 24.
  • the inlet chute 23 acts to space hopper 24 from the cutter assembly to prevent user access to the cutter element.
  • the shredder inlet assembly When the product is not in use, the shredder inlet assembly can be detached from the housing and located for storage in the collection box which is then placed in its usual position underneath the product. This action is shown sequentially in Figures 2 to 5 .
  • spring-biased movable safety flap 25 automatically positions itself to protect the user from inadvertent access to the cutter, which would otherwise be exposed near the top of the machine. This is preferably achieved by means of a pivoting action.
  • the safety flap When replacing the inlet assembly the safety flap is held open while the locations 21 are re-engaged and the assembly swung back into its operative position. The safety flap is then held open by the inlet assembly.
  • collection bin 16 can be placed over the top of the cutter housing 10 with the shredder inlet assembly 20 removed. This arrangement provides a cover to the apparatus to prevent ingress of stray matter into the cutter cavity during storage.
  • the inlet assembly is also suitably fitted with interlocks to prevent operation of the product without it correctly in place.
  • interlocks should not rely on spring actions but be directly operated by positive mechanical action. In preferred embodiments, this is achieved by means of a moveable element which simultaneously locks the inlet assembly in place and directly actuates an electrical rocker switch.
  • Figures 7 and 8 illustrate one suitable embodiment.
  • Catch 22 comprises an engagement element in the form of a projection 30 on shredder inlet assembly 20, projection 30 being adapted to be engaged by a locking plate 31 provided on the cutter housing 10.
  • Locking plate 31 is moveable between a non-locking position shown in Figure 7 and a locking position shown in Figure 8 , by means of being mounted on a threaded rod 32.
  • Threaded rod 32 can be rotated by means of operator control 33.
  • Locking plate 31 includes a locking plate body 34 which is adapted to engage the actuation member 35 of an electrical rocker switch 40 enabling electrical operation of the device when in the locking position ( Figure 8 ).
  • Alternative catch arrangements, in particular, engagement elements, will be apparent to the skilled person, including combinations of projections, apertures or slots.
  • a cover prevents access to the interlock assembly and the electrical switch.
  • a further feature of this design is that the number of turns of the operator control 33 between the point of electrically disabling the device and the point at which the inlet assembly is released can be selected to ensure that the cutters will have come to a complete stop before the user will have been able to disengage the catch and remove the shredder inlet assembly 20. For example, requiring the user to complete three or more complete turns of control 33 ensures that the cutters will have come to complete stop before access is possible.
  • additional electrically detectable identification means being included in the inlet assembly.
  • this is provided by one or more magnets suitably located in or on the shredder inlet assembly 20 detectable by correspondingly located reed switches on the main body.
  • Similar arrangements can be provided between the collection bin 16 and the main body of the apparatus. Preferably, these arrangements are integrated with the interlock circuitry, such that operation of the cutter element is prevented in the event that the correct shredder inlet assembly 20 and collection bin 16 are not in their operative positions.
  • each horizontal frame member 12 to which legs 11 are connected includes a dog-leg portion and the collection bin 16 includes corresponding recessed portions 30 set into its operatively lower edges.
  • the collection bin can be slid into position below the cutter housing 10 and is supported by the frame, rather than suspended below the housing as in the Flymo prior art apparatus. This means that the bin 16 is more easily mounted to and demounted from the apparatus and reduces strain upon the rim of the collection bin.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (11)

  1. Déchiqueteuse de végétaux comprenant un ensemble de coupe de déchiqueteuse ; un boîtier de coupe (10) pour ledit ensemble de coupe de déchiqueteuse, le boîtier de coupe ayant une entrée (14) et une sortie (15) ; un ensemble d'entrée de déchiqueteuse (20) prévu pour communiquer, pendant l'utilisation, avec l'entrée du boîtier de déchiqueteuse (14) et un cadre (11, 12) supportant le boîtier de coupe (10) dans une configuration élevée et définissant un espace en dessous de celui-ci ; un bac de collecte (16) pouvant être monté dans l'espace sous le boîtier de coupe (10) ; l'ensemble d'entrée de déchiqueteuse (20) étant détachable du boîtier de coupe (10), caractérisée en ce que l'ensemble d'entrée de déchiqueteuse (20) peut être disposé de manière à être rangé dans le bac de collecte (16).
  2. Déchiqueteuse de végétaux selon la revendication 1, dans laquelle le cadre comporte des supports de glissement (12) sur lesquels le bac de collecte (16) est prévu pour reposer et être supporté pendant l'utilisation.
  3. Déchiqueteuse de végétaux selon la revendication 2, dans laquelle le bac de collecte (16) a un bord inférieur et des côtés formés avec des portions en retrait (30) prévues pour s'engager, pendant l'utilisation, avec les supports de glissement (12).
  4. Déchiqueteuse de végétaux selon l'une quelconque des revendications 1 à 3, dans laquelle le bac de collecte (16) est prévu pour pouvoir être inversé au-dessus du boîtier de coupe pour fournir un couvercle pour celui-ci lorsque le dispositif de coupe de végétaux n'est pas utilisé.
  5. Déchiqueteuse de végétaux selon l'une quelconque des revendications 1 à 4, comprenant en outre un volet de sécurité déplaçable (25) prévu pour empêcher un accès accidentel aux dispositifs de coupe exposés lorsque l'ensemble d'entrée de déchiqueteuse (20) est détaché du boîtier de coupe (10).
  6. Déchiqueteuse de végétaux selon la revendication 5, dans laquelle le volet de sécurité (25) est sollicité dans une position fermée, de préférence au moyen d'une sollicitation par ressort.
  7. Déchiqueteuse de végétaux selon l'une quelconque des revendications 1 à 6, comprenant en outre un verrouillage électrique pour empêcher le fonctionnement lorsque l'ensemble d'entrée de déchiqueteuse (20) est détaché du boitier de coupe (10).
  8. Déchiqueteuse de végétaux selon la revendication 7, dans laquelle le verrouillage comprend un élément d'engagement (30) sur l'ensemble d'entrée de déchiqueteuse (20), l'élément d'engagement (30) étant prévu pour pouvoir être engagé par une plaque de verrouillage mobile (31) prévue dans le boîtier de coupe ; la plaque de verrouillage (31) comportant un corps de plaque de verrouillage (34) prévu pour s'engager avec un organe d'actionnement (35) d'un interrupteur à bascule électrique (40).
  9. Déchiqueteuse de végétaux selon la revendication 8, dans laquelle la plaque de verrouillage (31) peut être déplacée entre une position de non verrouillage et une position de verrouillage, au moyen d'une tige filetée pouvant tourner au moyen d'une commande d'opérateur (33).
  10. Déchiqueteuse de végétaux selon l'une quelconque des revendications 7 à 9, dans laquelle le verrouillage comprend ou comprend en outre un agencement de verrouillage magnétique comprenant au moins un aimant prévu dans ou sur l'ensemble d'entrée de déchiqueteuse (20) et un capteur magnétique situé de manière correspondante, de préférence un contact en ampoule, monté dans le boîtier de coupe.
  11. Déchiqueteuse de végétaux selon l'une quelconque des revendications 1 à 10, dans laquelle l'ensemble d'entrée de déchiqueteuse (20) comprend une goulotte d'entrée de déchiqueteuse allongée (23) et une trémie d'entrée de déchiqueteuse (24).
EP20070123893 2007-12-21 2007-12-21 Déchiqueteuse de végétaux Active EP2072140B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20070123893 EP2072140B1 (fr) 2007-12-21 2007-12-21 Déchiqueteuse de végétaux
CN2008101859958A CN101462088B (zh) 2007-12-21 2008-12-18 草木粉碎机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070123893 EP2072140B1 (fr) 2007-12-21 2007-12-21 Déchiqueteuse de végétaux

Publications (2)

Publication Number Publication Date
EP2072140A1 EP2072140A1 (fr) 2009-06-24
EP2072140B1 true EP2072140B1 (fr) 2012-04-25

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EP20070123893 Active EP2072140B1 (fr) 2007-12-21 2007-12-21 Déchiqueteuse de végétaux

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EP (1) EP2072140B1 (fr)
CN (1) CN101462088B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102114438B (zh) * 2011-01-12 2012-06-27 浙江亚特电器有限公司 一种碎枝机
CN102500456B (zh) * 2011-01-12 2013-10-09 浙江亚特电器有限公司 一种碎枝机
CN104084277A (zh) * 2013-12-20 2014-10-08 湖南万容科技股份有限公司 一种移动式撕碎机
WO2022134678A1 (fr) * 2020-12-21 2022-06-30 Techtronic Cordless Gp Déchiqueteuse de jardin alimentée par batterie

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU543000B2 (en) * 1981-05-15 1985-03-28 Rover-Scott Bonnar Ltd. Shredding machine
DE59405398D1 (de) * 1994-08-23 1998-04-09 Gloria Werke Schulte H Kg Gartenhäcksler mit einem geteilten Schneidwerksgehäuse
DE4431173A1 (de) * 1994-09-01 1996-03-07 Agria Werke Gmbh Abfallzerkleinerungsvorrichtung
CN2238544Y (zh) * 1995-09-19 1996-10-30 那成新 超微细粉碎机

Also Published As

Publication number Publication date
CN101462088A (zh) 2009-06-24
CN101462088B (zh) 2012-10-10
EP2072140A1 (fr) 2009-06-24

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